Work in progress

<rdf:RDF
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:j.0="http://qudt.org/schema/qudt/"
    xmlns:j.1="http://purl.org/dc/terms/"
    xmlns:owl="http://www.w3.org/2002/07/owl#"
    xmlns:j.2="http://www.w3.org/2004/02/skos/core#"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="http://qudt.org/vocab/unit/YR_TROPICAL">
    <j.0:conversionMultiplierSN rdf:datatype="http://www.w3.org/2001/XMLSchema#double">3.1556925216E7</j.0:conversionMultiplierSN>
    <j.0:applicableSystem rdf:resource="http://qudt.org/vocab/sou/CGS-GAUSS"/>
    <j.0:symbol>a{tropical}</j.0:symbol>
    <j.0:applicableSystem rdf:resource="http://qudt.org/vocab/sou/USCS"/>
    <j.0:conversionMultiplier rdf:datatype="http://www.w3.org/2001/XMLSchema#decimal">31556925.216</j.0:conversionMultiplier>
    <j.0:exactMatch rdf:resource="http://qudt.org/vocab/unit/YR_TROPICAL"/>
    <j.0:applicableSystem rdf:resource="http://qudt.org/vocab/sou/SI"/>
    <j.1:description rdf:datatype="http://www.w3.org/1999/02/22-rdf-syntax-ns#HTML">&lt;p&gt;A tropical year (also known as a solar year), for general purposes, is the length of time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice. Because of the precession of the equinoxes, the seasonal cycle does not remain exactly synchronised with the position of the Earth in its orbit around the Sun. As a consequence, the tropical year is about 20 minutes shorter than the time it takes Earth to complete one full orbit around the Sun as measured with respect to the fixed stars. Since antiquity, astronomers have progressively refined the definition of the tropical year, and currently define it as the time required for the mean Sun's tropical longitude (longitudinal position along the ecliptic relative to its position at the vernal equinox) to increase by 360 degrees (that is, to complete one full seasonal circuit).&lt;/p&gt;</j.1:description>
    <j.0:hasQuantityKind rdf:resource="http://qudt.org/vocab/quantitykind/Time"/>
    <j.2:altLabel>solar year</j.2:altLabel>
    <j.0:applicableSystem rdf:resource="http://qudt.org/vocab/sou/IMPERIAL"/>
    <rdf:type rdf:resource="http://qudt.org/schema/qudt/Unit"/>
    <j.0:applicableSystem rdf:resource="http://qudt.org/vocab/sou/CGS"/>
    <j.0:uneceCommonCode>D42</j.0:uneceCommonCode>
    <j.0:iec61360Code>0112/2///62720#UAB029</j.0:iec61360Code>
    <rdfs:isDefinedBy rdf:resource="http://qudt.org/2.1/vocab/unit"/>
    <j.0:hasDimensionVector rdf:resource="http://qudt.org/vocab/dimensionvector/A0E0L0I0M0H0T1D0"/>
    <j.0:applicableSystem rdf:resource="http://qudt.org/vocab/sou/CGS-EMU"/>
    <j.0:ucumCode rdf:datatype="http://qudt.org/schema/qudt/UCUMcs">a_t</j.0:ucumCode>
    <rdfs:label xml:lang="en">Tropical Year</rdfs:label>
  </rdf:Description>
</rdf:RDF>

@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<http://qudt.org/vocab/unit/YR_TROPICAL>
  rdf:type <http://qudt.org/schema/qudt/Unit> ;
  <http://purl.org/dc/terms/description> "<p>A tropical year (also known as a solar year), for general purposes, is the length of time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice. Because of the precession of the equinoxes, the seasonal cycle does not remain exactly synchronised with the position of the Earth in its orbit around the Sun. As a consequence, the tropical year is about 20 minutes shorter than the time it takes Earth to complete one full orbit around the Sun as measured with respect to the fixed stars. Since antiquity, astronomers have progressively refined the definition of the tropical year, and currently define it as the time required for the mean Sun's tropical longitude (longitudinal position along the ecliptic relative to its position at the vernal equinox) to increase by 360 degrees (that is, to complete one full seasonal circuit).</p>"^^rdf:HTML ;
  <http://qudt.org/schema/qudt/applicableSystem> <http://qudt.org/vocab/sou/CGS> ;
  <http://qudt.org/schema/qudt/applicableSystem> <http://qudt.org/vocab/sou/CGS-EMU> ;
  <http://qudt.org/schema/qudt/applicableSystem> <http://qudt.org/vocab/sou/CGS-GAUSS> ;
  <http://qudt.org/schema/qudt/applicableSystem> <http://qudt.org/vocab/sou/IMPERIAL> ;
  <http://qudt.org/schema/qudt/applicableSystem> <http://qudt.org/vocab/sou/SI> ;
  <http://qudt.org/schema/qudt/applicableSystem> <http://qudt.org/vocab/sou/USCS> ;
  <http://qudt.org/schema/qudt/conversionMultiplier> 31556925.216 ;
  <http://qudt.org/schema/qudt/conversionMultiplierSN> 3.1556925216E7 ;
  <http://qudt.org/schema/qudt/exactMatch> <http://qudt.org/vocab/unit/YR_TROPICAL> ;
  <http://qudt.org/schema/qudt/hasDimensionVector> <http://qudt.org/vocab/dimensionvector/A0E0L0I0M0H0T1D0> ;
  <http://qudt.org/schema/qudt/hasQuantityKind> <http://qudt.org/vocab/quantitykind/Time> ;
  <http://qudt.org/schema/qudt/iec61360Code> "0112/2///62720#UAB029" ;
  <http://qudt.org/schema/qudt/symbol> "a{tropical}" ;
  <http://qudt.org/schema/qudt/ucumCode> "a_t"^^<http://qudt.org/schema/qudt/UCUMcs> ;
  <http://qudt.org/schema/qudt/uneceCommonCode> "D42" ;
  rdfs:isDefinedBy <http://qudt.org/2.1/vocab/unit> ;
  rdfs:label "Tropical Year"@en ;
  <http://www.w3.org/2004/02/skos/core#altLabel> "solar year" ;
.

{"resource":"Tropical Year" 
 ,"qname":"unit:YR_TROPICAL" 
 ,"uri":"http:\/\/qudt.org\/vocab\/unit\/YR_TROPICAL" 
 ,"properties":["alternative label":"solar year" 
    ,"applicable system":"sou:CGS" 
    ,"applicable system":"sou:CGS-EMU" 
    ,"applicable system":"sou:CGS-GAUSS" 
    ,"applicable system":"sou:IMPERIAL" 
    ,"applicable system":"sou:SI" 
    ,"applicable system":"sou:USCS" 
    ,"conversion multiplier":"31556925.216" 
    ,"conversion multiplier scientific":"3.1556925216E7" 
    ,"description":"<p>A tropical year (also known as a solar year), for general purposes, is the length of time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice. Because of the precession of the equinoxes, the seasonal cycle does not remain exactly synchronised with the position of the Earth in its orbit around the Sun. As a consequence, the tropical year is about 20 minutes shorter than the time it takes Earth to complete one full orbit around the Sun as measured with respect to the fixed stars. Since antiquity, astronomers have progressively refined the definition of the tropical year, and currently define it as the time required for the mean Sun's tropical longitude (longitudinal position along the ecliptic relative to its position at the vernal equinox) to increase by 360 degrees (that is, to complete one full seasonal circuit).<\/p>" 
    ,"exact match":"unit:YR_TROPICAL" 
    ,"has dimension vector":"dimension:A0E0L0I0M0H0T1D0" 
    ,"has quantity kind":"quantitykind:Time" 
    ,"iec-61360 code":"0112\/2\/\/\/62720#UAB029" 
    ,"isDefinedBy":"<http:\/\/qudt.org\/2.1\/vocab\/unit>" 
    ,"label":"Tropical Year" 
    ,"symbol":"a{tropical}" 
    ,"type":"qudt:Unit" 
    ,"ucum code":"a_t" 
    ,"unece common code":"D42" 
    ]}

{
  "@id" : "http://qudt.org/vocab/unit/YR_TROPICAL",
  "@type" : "http://qudt.org/schema/qudt/Unit",
  "description" : "<p>A tropical year (also known as a solar year), for general purposes, is the length of time that the Sun takes to return to the same position in the cycle of seasons, as seen from Earth; for example, the time from vernal equinox to vernal equinox, or from summer solstice to summer solstice. Because of the precession of the equinoxes, the seasonal cycle does not remain exactly synchronised with the position of the Earth in its orbit around the Sun. As a consequence, the tropical year is about 20 minutes shorter than the time it takes Earth to complete one full orbit around the Sun as measured with respect to the fixed stars. Since antiquity, astronomers have progressively refined the definition of the tropical year, and currently define it as the time required for the mean Sun's tropical longitude (longitudinal position along the ecliptic relative to its position at the vernal equinox) to increase by 360 degrees (that is, to complete one full seasonal circuit).</p>",
  "applicableSystem" : [ "http://qudt.org/vocab/sou/CGS-GAUSS", "http://qudt.org/vocab/sou/USCS", "http://qudt.org/vocab/sou/SI", "http://qudt.org/vocab/sou/IMPERIAL", "http://qudt.org/vocab/sou/CGS", "http://qudt.org/vocab/sou/CGS-EMU" ],
  "conversionMultiplier" : "31556925.216",
  "conversionMultiplier:SN" : 3.1556925216E7,
  "exactMatch" : "http://qudt.org/vocab/unit/YR_TROPICAL",
  "hasDimensionVector" : "http://qudt.org/vocab/dimensionvector/A0E0L0I0M0H0T1D0",
  "hasQuantityKind" : "http://qudt.org/vocab/quantitykind/Time",
  "iec61360Code" : "0112/2///62720#UAB029",
  "symbol" : "a{tropical}",
  "ucumCode" : "a_t",
  "uneceCommonCode" : "D42",
  "isDefinedBy" : "http://qudt.org/2.1/vocab/unit",
  "label" : {
    "@language" : "en",
    "@value" : "Tropical Year"
  },
  "altLabel" : "solar year",
  "@context" : {
    "conversionMultiplierSN" : {
      "@id" : "http://qudt.org/schema/qudt/conversionMultiplierSN",
      "@type" : "http://www.w3.org/2001/XMLSchema#double"
    },
    "applicableSystem" : {
      "@id" : "http://qudt.org/schema/qudt/applicableSystem",
      "@type" : "@id"
    },
    "symbol" : {
      "@id" : "http://qudt.org/schema/qudt/symbol"
    },
    "conversionMultiplier" : {
      "@id" : "http://qudt.org/schema/qudt/conversionMultiplier",
      "@type" : "http://www.w3.org/2001/XMLSchema#decimal"
    },
    "exactMatch" : {
      "@id" : "http://qudt.org/schema/qudt/exactMatch",
      "@type" : "@id"
    },
    "description" : {
      "@id" : "http://purl.org/dc/terms/description",
      "@type" : "http://www.w3.org/1999/02/22-rdf-syntax-ns#HTML"
    },
    "hasQuantityKind" : {
      "@id" : "http://qudt.org/schema/qudt/hasQuantityKind",
      "@type" : "@id"
    },
    "altLabel" : {
      "@id" : "http://www.w3.org/2004/02/skos/core#altLabel"
    },
    "uneceCommonCode" : {
      "@id" : "http://qudt.org/schema/qudt/uneceCommonCode"
    },
    "iec61360Code" : {
      "@id" : "http://qudt.org/schema/qudt/iec61360Code"
    },
    "isDefinedBy" : {
      "@id" : "http://www.w3.org/2000/01/rdf-schema#isDefinedBy",
      "@type" : "@id"
    },
    "hasDimensionVector" : {
      "@id" : "http://qudt.org/schema/qudt/hasDimensionVector",
      "@type" : "@id"
    },
    "ucumCode" : {
      "@id" : "http://qudt.org/schema/qudt/ucumCode",
      "@type" : "http://qudt.org/schema/qudt/UCUMcs"
    },
    "label" : {
      "@id" : "http://www.w3.org/2000/01/rdf-schema#label"
    },
    "rdf" : "http://www.w3.org/1999/02/22-rdf-syntax-ns#",
    "owl" : "http://www.w3.org/2002/07/owl#",
    "xsd" : "http://www.w3.org/2001/XMLSchema#",
    "rdfs" : "http://www.w3.org/2000/01/rdf-schema#"
  }
}